GSC 68180, Mount McLearn (Triassic of Canada)

Where: British Columbia, Canada (59.1° N, 125.5° W: paleocoordinates 36.9° N, 52.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: kerri ammonoid zone, Baldonnel Formation, Lacian (221.5 - 215.6 Ma)

• Subzone 2

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by E.T. Tozer in 1965; reposited in the GSC

Primary reference: E. T. Tozer. 1980. New genera of Triassic Ammonoidea. Current Research, Part A. Geological Survey of Canada Paper 80-1A:107-113 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138592: authorized by Matthew Clapham, entered by Matthew Clapham on 22.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phylloceratida - Discophyllitidae
Discophyllites ebneri Mojsisovics 1896 ammonite
 Ceratitida - Juvavitidae
Griesbachites humi McLearn 1937 ceratite
Griesbachites borealis n. sp. Tozer 1994 ceratite
Guembelites jandianus von Mojsisovics 1896 ceratite
Dimorphites pardonetiensis McLearn 1940 ceratite
 Ceratitida - Thisbitidae
Stikinoceras kerri McLearn 1930 ceratite
Metathisbites dawsoni McLearn 1940 ceratite
 Ceratitida - Tropiceltitidae
Styrites communis Mojsisovics 1893 ceratite
Tropiceltites inflatus n. sp. Tozer 1994 ceratite
Tropiceltites columbianus McLearn 1940 ceratite
 Ceratitida - Trachyceratidae
Pterosirenites auritus n. gen. n. sp.
Pterosirenites auritus n. gen. n. sp. Tozer 1980 ceratite
 Ceratitida - Clionitidae
Clionitites laevis n. sp. Tozer 1994 ceratite
Clionitites punctulus n. sp. Tozer 1994 ceratite